External monitor resolution not compatible with laptop resolution

Hi, I am using Manjaro with i3WM.
I have a ASUS laptop with 1920x1200 screen resolution. I also have an 1920x1080 second monitor.
The issue is: I cannot use the second monitor, cause it’s black and nothing shows on it. Laptop is also useless if the monitor is plugged in. Can you please help me?

Hi @krasnal

Yes. I can help you help yourself by directing you to the following tutorials. As you will discover by reading them, you will need to provide more descriptive information for anyone to help effectively:

I hope this helps. Cheers.